Modular shelf



FIG. 1 is a front view of the modular shelf of the present invention;

FIG. 2 is a left view of the modular shelf of FIG. 1;

FIG. 3 is a right view of the modular shelf of FIG. 1; and,

FIG. 4 is a rear view of the modular shelf.

The broken line showing of a wall in FIGS. 2 and 3 is for illustrativepurposes only and forms no part of the claimed design.

The ornamental design for a modular shelf, as shown and described. 